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Home / Computer Hardware, Monitors & Peripherals / Hi-Link Human Presence Sensor LD2410B/LD2410C/LD2401/2402 Radar Induction Module

Attributes

Brand -
Category Electronic Components / Maker DIY / Computer Hardware, Monitors & Peripherals
Origin -
Radar Frequency 24GHz ISM Band
Detection Range 0.5m to 5m Adjustable
Field of View 120 Degrees
Operating Voltage 3.3V to 5V DC
Communication Interface UART TTL / Bluetooth
Output Signal GPIO Digital High/Low
Static Presence Detection Supported (Breathing Motion)
Module Dimensions 20mm x 20mm x 2mm
Operating Temperature -20°C to 60°C
Compatibility ESPHome, Home Assistant, Arduino

5 reviews

A

Anonymous

Apr 09, 2026

Rating: 5/5

Perfect for Smart Lighting

This sensor works flawlessly with my ESP32 setup. It detects when I am sitting still at my desk, which my old PIR sensor could not do. Highly recommended for automation.

A

Anonymous

Apr 01, 2026

Rating: 4/5

Good sensitivity but needs tuning

The hardware is solid and detection is accurate. However, you need to spend some time configuring the sensitivity gates to avoid false positives from fans or curtains.

A

Anonymous

Mar 26, 2026

Rating: 3/5

Documentation could be better

The module works as advertised, but the setup guide was a bit vague regarding the Bluetooth configuration app. Had to search forums for the right steps.

A

Anonymous

Mar 02, 2026

Rating: 5/5

Excellent mmWave Module

Much better than standard motion sensors. It picks up breathing presence reliably. The UART interface makes integration straightforward for custom projects.

A

Anonymous

Feb 07, 2026

Rating: 5/5

Solves the lights off issue

Finally, my bathroom lights stay on while I am reading. The static presence detection is a game changer for smart home comfort. Fast shipping too.

5 FAQ

Q: Does this work with 5V Arduino boards?

A: Yes, the module supports an input voltage range of 3.3V to 5V DC, so it is compatible with most 5V Arduino boards.

Q: Is Bluetooth available on all models listed?

A: Bluetooth configuration is available on the LD2410B and LD2410C variants. The LD2401 and LD2402 typically use UART only.

Q: What is the maximum detection distance?

A: The maximum detection range is approximately 5 meters, but this can be adjusted via the configuration software to suit your room size.

Q: Can it detect breathing while sleeping?

A: Yes, the 24GHz mmWave technology is sensitive enough to detect micro-movements such as breathing within the configured range.

Q: Can I mount this behind a plastic cover?

A: Yes, the radar signal can penetrate non-metallic materials like plastic or drywall, allowing for concealed installation.

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